Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Patent
1998-12-09
2000-12-12
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
188158, 188162, 188 111L, 188181T, 303 20, 303122, 30312208, 30312203, 303162, 303112, 701 29, 318362, B60T 800, B60T 1722, B60T 1374
Patent
active
061588229
ABSTRACT:
A method of diagnosing an electrically operated brake for abnormality thereof in an automotive vehicle wherein a wheel is braked by a friction force generated by an electric motor of the brake upon an operation of a brake operating member, the method comprising the steps of: applying an abnormality checking drive signal to the electric motor to operate the electric motor while the brake operating member is placed in a non-operated position; detecting a quantity relating to an output of the electric motor while the drive signal is applied to the electric motor; and determining that the electrically operated brake is abnormal, if the detected quantity does not normally correspond to a magnitude of the abnormality checking drive signal.
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Otomo Akihiro
Shirai Kenji
Yoshino Yasunori
Butler Douglas C.
Toyota Jidosha & Kabushiki Kaisha
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